package com.hs.utils;

import java.security.MessageDigest;

/**
 * @Author lxz
 * @Date 2023/7/5 星期三
 */
public class StringUitls {

    /**
     * 取得GUID
     * @return
     */
    public static String getGuid(){
        //为统一、美观，改为大写
        return java.util.UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();
    }
    public static int getGuidByInt(){
        long l = System.currentTimeMillis();
        String substring = String.valueOf(l).substring(0, 10);
        return  Integer.valueOf(substring);
    }

    public static String md5(String s) {

        char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
                'a', 'b', 'c', 'd', 'e', 'f' };
        try {
            byte[] strTemp = s.getBytes();
            MessageDigest mdTemp = MessageDigest.getInstance("MD5");
            mdTemp.update(strTemp);
            byte[] md = mdTemp.digest();
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            return null;
        }


    }
}
